You email sketch. Factory sends wrong color. Sleeves short. 5,000 shirts rework. $25,000 lost. Season missed. Specs seem simple. But misread kills. I get fuzzy emails daily. Clear specs save time and cash.
Use tech packs with measurements, fabrics, trims, and samples. Weekly calls. Approval steps. Cut errors 80%.
Read on. I run Shanghai Fumao. I teach clear comms. Real cases fixed client lines. Master specs for smooth apparel production.
What Belongs In A Full Tech Pack?
Tech pack is bible. Miss one line. Error.
Tech pack needs sketches, BOM, size chart, grade rules, labels, and tests.
Why BOM Prevents Trim Mixups?
List every button, zipper. In 2023, Texas polo brand listed wrong zipper length. 20cm not 18cm. Rework 2,000 units. $4,000. Now BOM exact. Check BOM guide. Detail all.
How Size Charts Avoid Fit Issues?
CM not inches. Florida blouse line used inches. Factory CM. Bust off 2cm. Returns 30%. Switched to CM table. Fit perfect. See [size chart standards](https://www.astm.org/standards apparel sizing). Standardize.
| Tech Pack Section | Must Include | Common Error |
|---|---|---|
| Sketches | Front/back | No scale |
| Grade Rules | +2cm M to L | Miss grades |
What Labels And Tests Add?
Care labels. CPSIA. Miami kids wear missed flammability note. Failed test. $3,000 redo.
Why Samples Beat Words Alone?
See touch feel. Words lie.
Send physical samples. Gold seal approval. Lab dips first.
How Proto Samples Catch Design Flaws?
First make. LA jacket brand proto showed armhole tight. Adjusted pattern. Saved bulk fix. Read proto process. Test early.
Why Lab Dips Matter For Color?
Screen color shifts. Denver sweaters dip approved Pantone. Bulk matched 98%. No dye lots issue. Explore lab dip approval. Match exact.
What Fit Samples Confirm?
Wear test. Chicago tees fit sample on model. Sleeve length ok. Green light.
| Sample Type | Purpose | Cost |
|---|---|---|
| Proto | Design | $50-100 |
| Fit | Size | $80-150 |
How Tools Streamline Spec Sharing?
Email slow. Files lost.
Use PLM software, WeChat groups, shared drives. Real-time updates.
Why WeChat Beats Email?
Instant photo. Video. Boston dress brand sent seam photo. Fixed same day. No week delay. Use WeChat business. Chat live.
How Shared Drives Prevent Version Mix?
One Google Drive. New York startup old file. Wrong stitch. Now lock versions. Check drive sharing. Control access.
What PLM Software Scales?
Centric or Bamboo Rose. European coats full history. Audit easy.
Why Weekly Calls And Approvals Work?
Silence breeds errors.
Set weekly Zoom. Sign off each stage. PPS approval mandatory.
How Calls Catch Misunderstandings?
Voice tone. Seattle activewear call. Heard collar wrong. Corrected live. View virtual meetings. Talk weekly.
Why PPS Approval Saves?
Pre-production sample. Florida shorts PPS signed. Bulk matched. No surprise. Learn PPS importance. Final check.
What Sign-Off Chain Does?
Designer. QC. Buyer. All sign. Miami blouses chain. Zero rework.
| Stage | Approval | Risk if Skip |
|---|---|---|
| Proto | Designer | Design error |
| PPS | All | Bulk fail |
Conclusion
Communicate design specs clearly with your factory using tech packs, samples, tools, and calls. Cut errors. Save cash. Last year, LA jackets adjusted armhole at proto. No rework. Texas polos exact BOM. Trim perfect. Florida shorts PPS sign-off. Bulk on time. You launch smooth. Partner with Shanghai Fumao. Full tech pack support. Weekly calls. PPS standard. 5 production lines. DDP mode. Contact Business Director Elaine at elaine@fumaoclothing.com. Spec clear now.
